Arrowrock Lake Water Level
U.S. Army Corps of Engineers · Idaho
Latest reading Oct 27, 2:00 AM · elevation
Arrowrock Lake is at 3,135.75 ft today. It is 31% full.
Lake 31% full — fair fall fishing day (4/10), best window 6:51 PM–7:51 PM (moonrise near sunset).
Water level chart
ft above sea levelReading
Arrowrock Lake fishing report & conditions
updated Oct 27, 9:05 AM ETLake 31% full — fair fall fishing day (4/10), best window 6:51 PM–7:51 PM (moonrise near sunset).
- Water temp—no water-temperature sensor on this water yet
- Level31% fullNo 24-hour level change available
Official Idaho fishing info: Idaho Fish and Game — Idaho Fishing Planner
Best fishing times today
Today is a fair fishing day (solunar + local conditions)
4/10
Waning gibbous · 97% lit · New moon Mon, Nov 9 · Sunrise 8:13 AM · Sunset 6:41 PM
Major fishing times
- Moon overhead1:25 AM–3:25 AM
- Moon underfoot1:55 PM–3:55 PM
Minor fishing times
- Moonset9:52 AM–10:52 AM
- Moonrise6:51 PM–7:51 PMSunset
Fishing times for the next 7 days
| TodayOct 27 | 4/10Fair | Major 1:25 AM–3:25 AM · 1:55 PM–3:55 PM Minor 9:52 AM–10:52 AM · 6:51 PM–7:51 PM |
|---|---|---|
| WedOct 28 | 2/10Poor | Major 2:26 AM–4:26 AM · 2:57 PM–4:57 PM Minor 11:11 AM–12:11 PM · 7:41 PM–8:41 PM |
| ThuOct 29 | 4/10Fair | Major 3:30 AM–5:30 AM · 4:02 PM–6:02 PM Minor 12:21 PM–1:21 PM · 8:44 PM–9:44 PM |
| FriOct 30 | 3/10Poor | Major 4:34 AM–6:34 AM · 5:06 PM–7:06 PM Minor 1:18 PM–2:18 PM · 9:58 PM–10:58 PM |
| SatOct 31 | 4/10Fair | Major 5:36 AM–7:36 AM · 6:05 PM–8:05 PM Minor 2:02 PM–3:02 PM · 11:16 PM–12:16 AM |
| SunNov 1 | 4/10Fair | Major 5:33 AM–7:33 AM · 6:00 PM–8:00 PM Minor 1:36 PM–2:36 PM · 11:33 PM–12:33 AM |
| MonNov 2 | 3/10Poor | Major 6:26 AM–8:26 AM · 6:50 PM–8:50 PM Minor 2:03 PM–3:03 PM |
How this rating works
Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the lake level is steady, and the water temperature where it is measured.
| Base | every day starts at 1 | 1 |
|---|---|---|
| Sunrise / sunset | a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonrise × sunset +1) | 1 |
| Moon phase | within 2 days of a new or full moon +2, within 4 days +1 (today: 1.5 days) | 2 |
| Local conditions | pressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · level within ±0.25 ft in 24 h +1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
| 0 |
| Today | 4, rounded | 4/10 |
1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.
Solunar periods calculated for 43.60, -115.92 (moon times from astronomical equations, Arrowrock Lake local time).
Plan your trip to Arrowrock Lake
Affiliate linksPlaces to stay near Arrowrock Lake
Search lake houses, cabins & hotels near Arrowrock Lake → via Stay22
Affiliate links: if you book through Stay22, GetYourGuide or Viator we may earn a commission, at no extra cost to you. It doesn’t affect the data on this page. How this works
Nearby lakes & rivers
About this data
- Source
- U.S. Army Corps of Engineers — Arrowrock Dam
- Location
- 43.5953, -115.9225 · Idaho
- Measures
- Reservoir water-surface elevation, feet above sea level (NGVD29)
- Latest reading
- Oct 27, 2:00 AM local time
- History
- 1 days on file since 2026-10-27
- Page built
- Oct 27, 2026 9:05 AM ET
- Storage
- 85,492 of 272,200 acre-ft (Top of Normal)
Source: U.S. Army Corps of Engineers (official page). Operator data is preliminary and may be revised. Weather: NOAA National Weather Service.